Rotary motor.



No. 655,093. Patented July 3|, I900.

V. F. LAKE.

ROTARY moTurz. (Application filed Dec. 15, 1899.) (Nullodalr) 3 Sheets- :Sheet l.

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Patented July 3|, I900. V. F. LAKE.

ROTARY MOTOR.

(Application filed Dec. 15, 1899.)

3 Sheets-Sheet 2 (No Model.)

JLUGILZZTJ VINCENT F LAKE ms ATTORNEYS.

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v. .F. LAKE. BOIAR Y MOTOR.

( No Model.)

(Application filed Dec. 16, 1899.)

Patented July 3|, I900.

3 $heetsSheet 3 jiwenfir H/sfZ-rTo RMEYS.

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UNITED STAT s PATENT HOFF'IGE,

VINCENT F. LAKE, OF PLEAsANTvI L NEW JERSEY.

RoTA RY; M OTTOZR.

SPEGIFICATIONformingpart of Letters PatentRo. 655,093, dated July 31, 1900.

l Application filed December 15, 1899. Serial mi itate. (No model.)

T0 aZZ whomit may concern:

Be it known that I, VINCENT F. LAKE, a citizen of the United States of America and a resident of and havingapost-offlce address at Pleasantville, Atlantic county, State of New Jersey, have invented Improvements in R0- other motive fluidiworking expansively; I

prefer to embody my invention in a motor of that class in which a piston with cam-like projection or projections rotates in a cylindrical casing and works in conjunction with mov able abutments in the casing.

In the accompanying drawings, Figure 1 is a side elevation of a rotary motor constructed in accordance with my invention. Fig. 2 is a plan view of the same. Fig. 3 is a sectional elevationwith the front casing removed to illustrate the internal construction. Figs. 4, 5, and 6 are views showing certain movable parts in different positions. Fig. 7 is an edge viewof one of the .movable abutments, and. Fig. 8 isaview illustrating an automatic governing means.

In carrying out my invention the rotary.

pistonlmay be provided with any suitable number of cam-like projections and a corie-I,

spending number of: movable abutments in the casing, andthe motor may be duplex or.

triplex or'with'a greater number of pistons and chambers in which the pistons rotate in and rotating within the working chamber in the cylindrical casing B. The front and back plates 13 B of the casing are provided with bearings for the shaft A of the rotary piston.-

In conjunction withthis piston there are provided two movable abutments C, which I prefer tomake in-the, form of levers pivoted.

at c to suitable hearings in the side plates of the casing,- s o astoswing upon these pivots toward'an'd from the central axis of the rotary piston, as caused orpermitted by the piston to the chamber in the abutment.

inits rotation. The inner face of the free end of each abutment-lever bears against the periphery of thepiston. The cams a a force the abutment outward, as shown in Fig. 3. I make'use of the pressure of the motive fluid to move the free ends of the abu'tments in- ,ward against the piston as the cams pass. I

make each abutment hollow, asshown more clearly in Figs. 4: and 5, to form a longitudinal chamber D, open'at the outer end of the abutment, where it oscillates or slides in contact with a corresponding. face in the fixed part of the casing, where is provided an inletport E for the motive fluid. The motive fluid maybe' admitted by a pipe 1 through the branches 2 3 to the said ports E, Fig. 3.

The end face of the abutment acts as a valve, and

the relation of the open end of the chamber D in the abutment to the adjacent port E is such that when the movable abutment is pressed outwardlbya cam aof the rotary piston the chamber D will be open to the inlet-port E for the admission of motive fluid When the rotation of the piston carries the cam beyond the'movable abutment, the latter moving injward will close the port E, as shown in Fig. i5, andput the outer end of the chamber D in communication with the. space, within the casing behind the retreating cam, asshownin Fig.5, so that then the charge of 'motiye fluid Twill act expansively on the piston ,to impel it forward. a cut-ofifvalve to cut offthe supply of motive The abutment 0 thus it'self actsas fluid to the chamber D. v

Although I prefer to so constructthe outer end of the chamber D as to cut off the supply of motive fluid from the inlet-port E before opening communication between the. said chamberand the working space in the back of the piston, this isnot essential;:but Iregard it as important that the abutment acting as a valve shall close the inlet-port E,

cutting off the motive fluid supply to the chamber-D during most of the time the charge of motive fluid is acting on the piston, solthat such charge of motive fluid may act ekpana sively. This hollow movable abutment thus acting as a cut-off valve may also be'termed a charging means, supplying. definite charges of motive fluid to the working piston to act expansively thereon. In order that the quantity of the charge may be varied, I priostructionby which the. abutments 'of'iny movide means forvarying the capacity of the chamber D. This may be done by making the chamber cylindrical, as shown in the drawings, and providing a piston d in the back 'part of the chamber with means for-adjusting it therein; As such convenient means I provide a lever F on an axis f, and pivot to the outer end of the lever F alink f, against which the back part of the piston d' rests. This piston 01 may be pushed forward in the chamber D; as-illustrated"in Fig. 6, where-a Very small charge'of motive fluid is required, or it may be adjusted to any other suitable position in the chamber, depending on the size ofthe charge required. The levers F maybe controlledtogetlier by connecting the 1 armsf on "the shafts f by a1link'f Fig.3. Amanipulating-leverG (shown inFigs. 2 and 3) onione of the shafts f, provided with a suitable form of'locking-latch g to engage notches in a-fixed'quadrant G, enables the pistons d to'be setat any desired point in the chambers'D; V

- Inordertokeepthe free ends of the abutmentsO in contact with the periphery of the. piston while the motive fluid is acting on thelatter, "I provide "at about a right angle toithe chamber Da small lateral chamber H in each abutment,lFigs.j4,,5, and 6, andin this chamberis a'lpiston h, the outer endof which rests against-an'antifriction-roller h, carried by a fixed" partof the casing. The pressure of motive'fluid within the chamber D thus acts abutment adjacent to its end valve-face (which works against the 'part'of the casing carrying the port E) work in close contact with" the side plates of the casing but behind theseiparts 'ofthe abutment and towardthe' pivoting-point'is an'open space, as at X, Figs. 2and3, to the atmosphere, so that there is n'otonly free opportunity for the exhaust through this opening X, but also if toward theen'd of a 'stroke there would otherwise be a tendency to creation of a vacuum inthe spa'cebetween the face of one of the abutments' and the retreating cam as the piston rotates, such: vacuum formation is=prevented bygthe'ientrance of air under the abutment'at Y; Figs. 5 andi6, since there is then no longer any pressure of motive fluid to act against the piston h topress the abutment against tlie pi'ston' A.

In connection with the swinging abutmenti leversC,I prefer to provide an automatic governing device which acts by engaging withtheiabutments to prevent their delivery of moti-ve'fluid to the'piston when the motor is ru'nnin'g too fast'. While I do not intend to limit myself to or to claim any'specific' for-m o'f'su'ch' agoverningdevice, I haveillustratedin Fig. S'by way of example a coni tor maybe governed;

On one end of the shaft A of the rotary piston is mounted a transverse tube T. In one end of this tubeslides a weight W, held suspended therein by a spiral spring S, which *is itselfcarried by an'adjustable plug 1? in the tube T. This plug may be made adjustable' in the tube T by threading'it into the interior of the tube, as shown. As the shaft "j" revolves the weightW will tend by centrifugal action to slide outward against the pull of the spring S, and the latter is so adjusted'that whenthe motoris running at orbelow normal speed the weight will not strike the curvedinner face of a lever M, pivoted atm to the casing,.but whenthe normal force the weight W so far out as to strike the lever M at the moment when the cams a of the piston areabout to pass beyondthe ends of the abutments, as shown in --Fig.8.v The lever M has an arm m, acting on the latchN, for. the adjacent abutment 0. Another arm 1M2 througha connecting-rodr and lever M, pivoted at m to the casing, acts on a like latch N for the other abutment C, so'that on thedescribed excessof speed the latchesN N willbe thrown into engagement with their respective abutments, and the pressure of motive fiuidtendingto force the abutments toward the piston will holdthe latches in engagement until the camsa 'comin'g'around give the abutments a slight push outward, whereupon spiral springs 07., acting on the abutments, unless the governor-weightlw, acting upon the arm M, prevents:

I claim as my inventionrotary piston therein, with cams; in combinationwith movable abutments having cha-rgging chambers, the abutments. constituting Qrcut-oif valves to cut oi the supply of motive Efluid to the charging-chambers, whi'ch 'then ideliver the said'motive'fluid to the-working spaces in thecasing to WOI'k expansively'on the piston, all substantially as'described.

' 2. A rotarymotor,"havingi a casin'g 'anda jrota'ry piston therein with cams, in combinagtion with pivoted swinging abutments: progvidedwith charging-chambers; adapted when jthe abutments are in their outward'positions ito be open to the inlets for the motive-fluid, @but when moved to their inner positions to -;cut olf the supply of motive fluid to the cham- 'bers and'to deliver the charges to thelpiston, isubstantially as described. v

3. A rotary motor, having a casing, and a {rotary piston therein,-with cams, in combinajtion withmovable abutments Working in con- 'j j-unction with the piston and'having chambers to receive chargesof motive fluid from the inlets, and to deliver said charges to the @piston and means for varying the capacities iof 'saidchambers, substantially'as described.

4:. A rotary motor, having a casing and a speed is exceeded the centrifugal actionwill latches, push them out of engagement withits.

1. A rotary motor, havinga'c'asingg'anda rotary piston therein with cams, in combination with pivoted swinging abutments provided with charging-chambers adapted when the abutments are in their outward positions to be open to the inlets for the motive fluid but when moved to their inner positions to cut off the supply of motive fluid to the chambers and to deliver the charges to the piston, and means for varying the capacities of said chambers, substantially as described.

5. A rotary motor having a casing and a rotary piston therein with cams, in combination with pivoted swinging abutments provided with charging-chambers for the motive fluid, pistons in the backs of said chargingchambers, and means under" the control of the engineer for varying the positions of the pistons in said charging-chambers to vary the capacities of the latter, as and for the purpose described.

6. A rotary motor, having a casing and a rotary piston therein, with cams, in combination with movable abutments working in conjunction with the piston to admit motive fluid to work expansively on the piston, and means whereby the pressure of motive fluid acting on the piston, presses the abutments up to the latter, as and for the purpose described.

7. A rotary motor having a casing and a rotary piston therein with cams, in combination with pivoted swinging abutments having chambers to receive charges of motive fluid and deliver them to the piston to Work expansively, and means whereby the pressure of motive fluid in the charging-chambers presses the abutments up to the piston, as and for the purpose described.

8. A rotary motor having a casing and a rotary piston therein, with cams, in combination with pivoted swinging abutments adapt ed when in their inward positions to deliver motive fluid to the piston, and a governing device adapted to temporarily hold the said abutments in their outward positions when the motor runs too fast, substantially as described.

In testimony whereof I have signed my name to this specification in the presence 0 two subscribing witnesses.

VINCENT F. LAKEi Witnesses:

MURRAY 0. 130mm, Jos. I-I. KLEIN. 

